Consider a thin square plate floating on a viscous liquid in a large tank. The height $h$ of the liquid in the tank is much less than the width of the tank. The floating plate is pulled horizontally with a constant velocity $u_0$. Which of the following statements is (are) true?

$(A)$ The resistive force of liquid on the plate is inversely proportional to $h$

$(B)$ The resistive force of liquid on the plate is independent of the area of the plate

$(C)$ The tangential (shear) stress on the floor of the tank increases with $u _0$

$(D)$ The tangential (shear) stress on the plate varies linearly with the viscosity $\eta$ of the liquid

  • A$A,B,C$
  • B$A,B$
  • C$A,C,D$
  • D$A,C$
IIT 2018, Medium
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